213963961122 has 54 divisors (see below), whose sum is σ = 479161696689. Its totient is φ = 69001007760.

The previous prime is 213963961121. The next prime is 213963961151. The reversal of 213963961122 is 221169369312.

213963961122 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 6 + 3 + 9 + 611 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 149172840441 + 64791120681 = 386229^2 + 254541^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=327081.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (213963961121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60835308 + ... + 60838824.

Almost surely, 2^213963961122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213963961122

213963961122 is an abundant number, since it is smaller than the sum of its proper divisors (265197735567).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213963961122 is an frugal number, since it uses more digits than its factorization.

213963961122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7104 (or 3553 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The spelling of 213963961122 in words is "two hundred thirteen billion, nine hundred sixty-three million, nine hundred sixty-one thousand, one hundred twenty-two".